VACUUM ELECTRONIC DEVICE EMPLOYING SLOW-WAVE STRUCTURE COMPOSED OF GRATING INSIDE RECTANGULAR WAVEGUIDE

摘要

PURPOSE: A vacuum electronic device is provide to increase intensity of an electric field by locating a slow wave lattice circuit inside a rectangular waveguide, thereby enhancing the efficiency of the electromagnetic waves. CONSTITUTION: A cross section of a slow wave circuit(34) is arranged inside a rectangular waveguide. The cross section of the slow wave circuit is in an inverted triangle shape. An output unit hole is perpendicular to the lower side of an electronic beam input hole. Electronic beams proceed to the electronic beam focusing part(33) passing over the metal gratings, which induces an electric field. An output unit(35) is formed in the lower part of the input hole to be perpendicular to the electronic beams moving area.